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The “Z-1 Prototype Spacesuit and Portable Life Support System (PLSS) 2.0,” to give it its proper name, is what is called a “rear-entry space suit” made up of a combination of several hard elements mounted on a suit of fabric that’s flexible when uninflated. To get in, the astronaut uses a “suitport.” This is a combined hatch and life support pack on the back of the suit’s torso. The neat thing about the Z-1 is that the hatch allows it to latch onto a spaceship, rover or habitat.
Once docked, the suit’s hatch can open inside the craft and the astronaut can get in and out of the suit without using an airlock. This means that the wearer can get in and out much faster, less air is wasted than with an airlock and the astronaut doesn’t have to do so much “Prebreathing.”
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For example, the current backpack uses a sublimator to cool the suit, but that only works in a hard vacuum. NASA wanted one that would work on Mars, so the Z-1 uses a water membrane evaporation cooler that cools using the same principle as sweating and it’s tough enough to survive freezing.
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current ones use lithium hydroxide/metal oxide carbon dioxide scrubbers, which need to be baked between missions to drive off the carbon dioxide. The new ones regenerate automatically by dumping the carbon dioxide every few minutes.
Once docked, the suit’s hatch can open inside the craft and the astronaut can get in and out of the suit without using an airlock. This means that the wearer can get in and out much faster, less air is wasted than with an airlock and the astronaut doesn’t have to do so much “Prebreathing.”
...
For example, the current backpack uses a sublimator to cool the suit, but that only works in a hard vacuum. NASA wanted one that would work on Mars, so the Z-1 uses a water membrane evaporation cooler that cools using the same principle as sweating and it’s tough enough to survive freezing.
....
current ones use lithium hydroxide/metal oxide carbon dioxide scrubbers, which need to be baked between missions to drive off the carbon dioxide. The new ones regenerate automatically by dumping the carbon dioxide every few minutes.
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